Question

I wish to refactor code using .NET regular expressions. The aim is to split declarations and assignments (for backwards compatibility with SQL 2005).

Sample Input:

DECLARE @clientCode char(10), @city nvarchar(100) = '', @country char(2) = 'US',
   @clientId int

Desired Output:

DECLARE @clientCode char(10), @city nvarchar(100), @country char(2),
   @clientId int
SELECT @city = '', @country = 'us'

This is what I have so far to match the input:

DECLARE\s+
(
    ,?
    (@\w+\s+)
    (\(.+\))?
    (\=\s+\w+)?
)+

What replacement regex could I use to get the expected output?

Answer 1

Even if you get this working with a RegEx, it will be a maintenance nightmare.

I suggest you write out some well commented string manipulation in code.